Hi-Link HLK-LD1125H-24G User Manual

Human Presence Detection Radar HLK-LD1125H-24G
Application Manual
V1.2
2021-9-16
Due to product upgrades or other reasons, the content of this
document will be updated from time to time. This document is
intended as a guide only, and neither the information nor the
recommendations stated shall constitute any express or implied
warranty.

Hi-Link HLK-LD1125H-24G Specifications

General

Model	HLK-LD1125H-24G
Category	Security Sensors
Frequency	24GHz
Application	Human Presence Detection
Operating Voltage	5V
Output Signal	High/Low Level
Operating Humidity	0~95%RH
Technology	Microwave Radar
Detection Technology	Microwave Doppler Radar

Summary

Module Appearance and Interface

Module Performance

Debug Wiring and Configuration

Debug Wiring

Details the necessary wiring connections for debugging the radar module using a serial port.

Debug Configuration

Explains how to configure the serial port settings for debugging and testing the radar module.

Radar Output and Parameter Configuration

Radar Output

Explains the output messages from the radar module, such as 'mov' and 'occ' states.

Configuration Directives

Details how to set parameters like detection distance (rmax) and sensitivity thresholds (mth1, mth2, mth3).

Configuration Instruction Demonstration

Demonstrates sending commands and interpreting feedback for radar module parameter configuration.

Host Computer Usage for Evaluation

Host Computer Interface and Settings

Guides on using the host computer software for serial port detection, selection, and initial display.

Application Layer Settings

Details settings for switching between states (static, unmanned) using the host computer interface.

Radar Installation and Testing

Horizontal Installation Straight Line Test

Details the horizontal installation test setup and coverage for sitting and walking human bodies.

Hanging Height Vertical Test

Describes the vertical installation test scenario at a hanging height for human presence detection.

Precautions

Appendix